2 * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
3 * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
20 #ifndef __ASM_ARCH_MXC_CLOCK_H__
21 #define __ASM_ARCH_MXC_CLOCK_H__
24 #include <linux/list.h>
29 struct list_head node;
33 /* Source clock this clk depends on */
35 /* Secondary clock to enable/disable with this clock */
36 struct clk *secondary;
37 /* Reference count of clock enable/disable */
39 /* Register bit position for clock's enable/disable control. */
41 /* Register address for clock's enable/disable control. */
42 void __iomem *enable_reg;
44 /* get the current clock rate (always a fresh value) */
45 unsigned long (*get_rate) (struct clk *);
46 /* Function ptr to set the clock to a new rate. The rate must match a
47 supported rate returned from round_rate. Leave blank if clock is not
49 int (*set_rate) (struct clk *, unsigned long);
50 /* Function ptr to round the requested clock rate to the nearest
51 supported rate that is less than or equal to the requested rate. */
52 unsigned long (*round_rate) (struct clk *, unsigned long);
53 /* Function ptr to enable the clock. Leave blank if clock can not
55 int (*enable) (struct clk *);
56 /* Function ptr to disable the clock. Leave blank if clock can not
58 void (*disable) (struct clk *);
59 /* Function ptr to set the parent clock of the clock. */
60 int (*set_parent) (struct clk *, struct clk *);
63 int clk_register(struct clk *clk);
64 void clk_unregister(struct clk *clk);
66 #endif /* __ASSEMBLY__ */
67 #endif /* __ASM_ARCH_MXC_CLOCK_H__ */